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 Does 1725 go into 1600?

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cdady Posted - 20 Aug 2019 : 22:12:49
I was wondering if a series V 1725cc engine is a direct fit into a series IV 1600cc car, whether the 1725 uses the 1600 gearbox and what are the rear axles ratios for a non od 1600, and OD 1600 and an OD 1725? A lot of questions - thanks if you can help!

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cdady Posted - 16 Sep 2019 : 09:36:08
Many thanks to all - very helpful

Commerlad Posted - 23 Aug 2019 : 20:28:02
Full list of ratios For Arrows cars,

All were used standard transmission Non Overdrive

Dependant on location

Sometimes I think laterally, but then I have to get up!
pruyter Posted - 21 Aug 2019 : 21:02:36
The splines changed at the very late series V, the size of the clutch plate changed during the series IV when the first gear became a synchonized one and at the same time the clutch press plate changed from springs to diafragma.


828CC Posted - 21 Aug 2019 : 15:28:10
Not disputing that at all, just trying to point out a few other considerations when doing this transplant. According to contempory literature there were small ratio changes between the Series IV and V gearboxes along with the clutch plate size. So perhaps prudent to check if the splines are the same?
pruyter Posted - 21 Aug 2019 : 14:50:34
There are more differences like for instance an alternator instead of a dynamo and the carburettor plus manifolds differ but the question was: will it fit directly and the answer is yes.


828CC Posted - 21 Aug 2019 : 08:41:25
Might be worth noting the change of earthing between the series IV and V when considering the choice of ancillaries....
pruyter Posted - 21 Aug 2019 : 07:03:35
The engine fits right in. All non overdrive cars have a differential with a 3.89 ratio while the overdrive cars have a 4.22 ratio diff.



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